EP2395321A3 - Automatic data collection algorithm for 3d magnetic field calibration with reduced memory requirements - Google Patents

Automatic data collection algorithm for 3d magnetic field calibration with reduced memory requirements Download PDF

Info

Publication number
EP2395321A3
EP2395321A3 EP11168466.8A EP11168466A EP2395321A3 EP 2395321 A3 EP2395321 A3 EP 2395321A3 EP 11168466 A EP11168466 A EP 11168466A EP 2395321 A3 EP2395321 A3 EP 2395321A3
Authority
EP
European Patent Office
Prior art keywords
magnetic field
data collection
memory requirements
automatic data
field calibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11168466.8A
Other languages
German (de)
French (fr)
Other versions
EP2395321A2 (en
EP2395321B1 (en
Inventor
Toan Vu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell International Inc
Original Assignee
Honeywell International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honeywell International Inc filed Critical Honeywell International Inc
Publication of EP2395321A2 publication Critical patent/EP2395321A2/en
Publication of EP2395321A3 publication Critical patent/EP2395321A3/en
Application granted granted Critical
Publication of EP2395321B1 publication Critical patent/EP2395321B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/451—Execution arrangements for user interfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Human Computer Interaction (AREA)
  • Electromagnetism (AREA)
  • Measuring Magnetic Variables (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

A magnetic compass comprising a magnetometer for taking readings of a magnetic field and a processing unit that calibrates the magnetic compass is provided. The processing unit is configured to validate a predetermined number of magnetic field samples and calculate calibration coefficients from the validated magnetic field samples. Each validated magnetic field sample is at least a minimum separation angle apart from every other validated magnetic field sample.
EP11168466.8A 2010-06-08 2011-06-01 Automatic data collection algorithm for 3d magnetic field calibration with reduced memory requirements Not-in-force EP2395321B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/796,311 US8374816B2 (en) 2010-06-08 2010-06-08 Automatic data collection algorithm for 3D magnetic field calibration with reduced memory requirements

Publications (3)

Publication Number Publication Date
EP2395321A2 EP2395321A2 (en) 2011-12-14
EP2395321A3 true EP2395321A3 (en) 2016-05-11
EP2395321B1 EP2395321B1 (en) 2018-09-19

Family

ID=44118141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168466.8A Not-in-force EP2395321B1 (en) 2010-06-08 2011-06-01 Automatic data collection algorithm for 3d magnetic field calibration with reduced memory requirements

Country Status (5)

Country Link
US (1) US8374816B2 (en)
EP (1) EP2395321B1 (en)
JP (1) JP5898418B2 (en)
KR (1) KR20110134291A (en)
CN (1) CN102313544B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9329038B2 (en) 2011-09-30 2016-05-03 Apple Inc. Electronic devices with calibrated compasses
GB2524802B (en) 2014-04-03 2018-11-07 Nokia Technologies Oy A magnetometer apparatus and associated methods
WO2017120504A1 (en) 2016-01-08 2017-07-13 Durfee Paul N Osteotropic nanoparticles for prevention or treatment of bone metastases
CN106842094B (en) * 2016-12-31 2020-04-24 深圳市优必选科技有限公司 Data processing method and device for magnetometer calibration
US11344629B2 (en) 2017-03-01 2022-05-31 Charles Jeffrey Brinker Active targeting of cells by monosized protocells
CN109297476B (en) * 2017-07-24 2021-11-26 深圳市道通智能航空技术股份有限公司 Magnetometer calibration, sampling and azimuth determination methods and apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698912A (en) * 1985-12-11 1987-10-13 The Laitram Corporation Magnetic compass calibration
US20020092188A1 (en) * 2000-12-06 2002-07-18 Honeywell International Inc. Monitoring accuracy of an electronic compass
US20040254727A1 (en) * 2002-03-01 2004-12-16 Ockerse Harold C. Electronic compass system

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3682730D1 (en) 1985-09-03 1992-01-16 British Aerospace CALIBRATION OF A MAGNETIC COMPASS.
JPH03293516A (en) * 1990-04-12 1991-12-25 Matsushita Electric Ind Co Ltd Correcting method for output of azimuth detecting apparatus
US5287295A (en) * 1991-05-30 1994-02-15 Motorola Method and apparatus for calibrating an electronic compass to account for alignment errors in the compass windings
DE4234651C1 (en) * 1992-10-14 1994-02-17 Mannesmann Kienzle Gmbh Method for determining the yaw angle of a vehicle
US6023229A (en) * 1999-03-02 2000-02-08 Gentex Corp Rearview mirror with internally-mounted compass sensor
US6301794B1 (en) 1999-05-27 2001-10-16 Johnson Controls, Inc. Vehicle compass system with continuous automatic calibration
US6543146B2 (en) 2000-12-06 2003-04-08 Honeywell International, Inc. Electronic compass and compensation of large magnetic errors for operation over all orientations
US6968273B2 (en) * 2002-03-01 2005-11-22 Gentex Corporation Electronic compass system
KR100561849B1 (en) * 2003-11-13 2006-03-16 삼성전자주식회사 Method and apparatus for calibration of heading direction in mobile subject
KR100550871B1 (en) * 2003-12-03 2006-02-10 삼성전기주식회사 The automatic calibration methods of the electronic compass
US7225551B2 (en) 2004-04-07 2007-06-05 Siemens Vdo Automotive Corporation Electronic compass and method for tracking vehicle rotation
US7275008B2 (en) 2005-09-02 2007-09-25 Nokia Corporation Calibration of 3D field sensors
EP2031349A4 (en) * 2006-05-09 2012-10-03 Alps Electric Co Ltd Calibration program and electronic compass
US7451549B1 (en) 2006-08-09 2008-11-18 Pni Corporation Automatic calibration of a three-axis magnetic compass
KR20080026395A (en) 2006-09-20 2008-03-25 삼성전자주식회사 Method and system of 2-axis compass calibration considering magnetic environment and method and system of measuring azimuth using it
FI120276B (en) 2007-05-21 2009-08-31 Suunto Oy Compass device and method for compass devices
EP2028504B1 (en) 2007-08-23 2016-04-13 STMicroelectronics Srl Method and device for calibrating a magnetic sensor
CN101241009B (en) * 2007-12-28 2010-06-09 北京科技大学 Magneto- electronic compass error compensation method
JP5079660B2 (en) * 2008-10-23 2012-11-21 池上通信機株式会社 Device and method for generating correction data table for geomagnetic sensor
CN101487706B (en) * 2009-03-05 2012-06-20 无锡扶摇电子科技有限公司 computing method for dynamically extracting valid data by electronic compass

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698912A (en) * 1985-12-11 1987-10-13 The Laitram Corporation Magnetic compass calibration
US20020092188A1 (en) * 2000-12-06 2002-07-18 Honeywell International Inc. Monitoring accuracy of an electronic compass
US20040254727A1 (en) * 2002-03-01 2004-12-16 Ockerse Harold C. Electronic compass system

Also Published As

Publication number Publication date
US8374816B2 (en) 2013-02-12
CN102313544A (en) 2012-01-11
KR20110134291A (en) 2011-12-14
EP2395321A2 (en) 2011-12-14
JP5898418B2 (en) 2016-04-06
JP2011257397A (en) 2011-12-22
EP2395321B1 (en) 2018-09-19
US20110301898A1 (en) 2011-12-08
CN102313544B (en) 2015-04-01

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